[andrewflnr]

I recall one of the plans being to use the sun shield to entirely freeze out the atmosphere, then use a mass driver to chuck most of the CO2 into space. I don't recall exactly where that was supposed to be on the feasible to scifi spectrum.

I'd rather try to keep the carbon around for organic molecules. Are we sure we can't get in enough H2O and N to balance it out and build a nice thick biosphere?

[pfdietz]

You'd have to shoot it out of the solar system, otherwise much of it would reaccrete onto Venus... or onto Earth!

[andrewflnr]

I guess I'll count that as another reason to prefer managing it in situ. But it might be fine, actually? Slow re-accretion can probably be managed by whatever terraforming process we've kickstarted while most of it was gone.

Oh wait, I remember the plan, ship it to Mars so they can have some decent atmospheric pressure.

[pfdietz]

Mars could use only a small fraction of it. If the entire atmosphere of Venus were moved to Mars, the surface pressure there would be 120 bars (more at the lowest point).

[hinkley]

There’s a book where they freeze the atmosphere then cover the ice with a thick layer of dirt. But I cannot recall which.